x12+x9+x6+x3+1=(x^15-1)/(x^3-1)=(x^5-1)/(x-1) * (x^10-x^5+1)/(x^2+x+1)=(x^4+x^3+x^2+x+1) * (x^8-x^7+x^5-x^4+x^3-x+1)过程复杂,但2楼的肯定是错的(x3+x6+1)(x6+1)并不等于x6(x6+1)+x3(x6+1)+1
x12+x9+x6+x3+1=(x^15-1)/(x^3-1)=(x^5-1)/(x-1) * (x^10-x^5+1)/(x^2+x+1)=(x^4+x^3+x^2+x+1) * (x^8-x^7+x^5-x^4+x^3-x+1)过程复杂,但2楼的肯定是错的(x3+x6+1)(x6+1)并不等于x6(x6+1)+x3(x6+1)+1